Table T12. Average chemical compositions for the lithologic units, Hole 735B.

Table T12. Average chemical compositions for the lithologic units, Hole 735B.


Unit	Number of analyses	Major element oxide (wt%)						Mg#	Mg#80	Major element oxide (wt%)									Total H₂O
Unit	Number of analyses	SiO₂	TiO₂	Al₂O₃	Fe₂O₃t	Fe₂O₃	FeO	Mg#	Mg#80	MnO	MgO	CaO	Na₂O	K₂O	P₂O₅	H₂O⁺	CO₂	S	Total H₂O
I	18	51.4	0.5	17.2	7.9	2.2	5.2	72.7	70.8	0.1	8.2	10.6	3.6	0.2	0.1	1.1	0.12	0.01	99.4
II	91	50.7	0.6	16.5	7.7	1.6	5.4	74.2	75.1	0.1	9.2	11.8	3.0	0.1	0.0	0.9	0.10	0.05	99.2
III	25	50.4	1.3	15.2	10.6	2.6	7.2	67.6	67.2	0.2	8.2	11.0	3.2	0.1	0.0	0.6	0.10	0.09	99.4
IV	27	43.9	5.9	12.0	20.6	6.7	12.5	44.0	41.6	0.3	5.9	8.8	3.1	0.1	0.1	0.6	0.11	0.45	99.3
V	46	50.6	0.4	16.8	5.9	1.5	4.0	80.8	79.9	0.2	9.6	13.2	2.7	0.0	0.0	0.7	0.10	0.05	99.0
VI	33	48.4	1.4	16.4	9.7	5.5	4.9	70.2	68.1	0.3	9.6	11.2	3.0	0.1	0.1	0.5	0.06	0.09	100.1
VII	13	52.6	1.1	15.5	9.5	9.2	ND	ND	63.8	0.2	7.0	10.8	3.4	0.4	0.3	ND	ND	ND	100.7
VIII	12	52.3	0.8	15.9	9.2	9.2	ND	ND	68.4	0.2	8.1	11.1	3.5	0.0	0.0	ND	ND	ND	101.1
IX	10	51.6	1.5	15.7	10.2	8.1	ND	ND	65.5	0.2	7.5	10.9	3.5	0.1	0.1	ND	ND	ND	101.0
X	64	51.8	0.8	16.3	7.7	6.8	ND	ND	74.1	0.1	9.2	12.5	3.0	0.1	0.1	ND	ND	ND	101.5
XI	70	51.8	0.6	16.6	7.6	6.5	ND	ND	73.7	0.1	8.8	12.3	3.0	0.1	0.1	ND	ND	ND	100.9
XII	42	51.9	0.5	17.8	6.2	5.2	ND	ND	78.7	0.1	9.1	13.2	2.8	0.0	0.0	ND	ND	ND	101.6

Unit Number of
analyses Trace element (ppm)

V

Cr

Co

Ni

Cu

Zn

Ga

Sr

Y

Zr

I 18 196 92 37 84 22 42 16 178 18 86

II 91 171 242 38 114 30 37 15 155 16 33

III 25 251 114 46 61 52 61 17 163 19 34

IV 27 733 116 85 41 93 129 21 151 29 64

V 46 137 371 36 131 50 33 13 154 17 27

VI 33 256 263 50 191 67 64 15 159 20 68

VII 13 180 48 ND 58 50 67 ND 157 35 69

VIII 12 203 61 ND 66 64 57 ND 161 16 75

IX 10 278 21 ND 60 63 71 ND 174 35 152

X 64 201 167 ND 103 82 49 ND 160 22 56

XI 70 166 78 ND 85 79 49 ND 171 20 79

XII 42 174 167 ND 104 72 36 ND 175 11 26

Unit	Number of analyses	Trace element (ppm)
V	Cr	Co	Ni	Cu	Zn	Ga	Sr	Y	Zr
I	18	196	92	37	84	22	42	16	178	18	86
II	91	171	242	38	114	30	37	15	155	16	33
III	25	251	114	46	61	52	61	17	163	19	34
IV	27	733	116	85	41	93	129	21	151	29	64
V	46	137	371	36	131	50	33	13	154	17	27
VI	33	256	263	50	191	67	64	15	159	20	68
VII	13	180	48	ND	58	50	67	ND	157	35	69
VIII	12	203	61	ND	66	64	57	ND	161	16	75
IX	10	278	21	ND	60	63	71	ND	174	35	152
X	64	201	167	ND	103	82	49	ND	160	22	56
XI	70	166	78	ND	85	79	49	ND	171	20	79
XII	42	174	167	ND	104	72	36	ND	175	11	26

Notes: All averages adjusted for missing data. ND = not determined.